If we wanted to avoid using a non–renewable resource, because we do not want to harm the environment, we could burn to produce electricity.

biomass
coal
natural gas
petroleum

33: i think it’s b

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer